Question

Analogous structures _____.

Answer 1

indicate a common ancestor exists between two organisms

NOT:
result from evolution in a similar environment
are features which organisms still have but no longer use
develop when a mutation occurs in the DNA of an organism

Answer 2

Answer is result from evolution in a similar environment

The analogous structures are the various structures in different species having the similar in function because face similar environmental pressure, but have different in their origin. These structures evolved separately. Thus, they do not share common ancestor. For example are wings of birds and wings of insects, fins of fish and flippers of whales. Analogous structure supports convergent evolution.